M5.3 earthquake - 47 km NNE of Chilecito, Argentina

What happened

A magnitude 5.3 earthquake struck 47 km NNE of Chilecito, Argentina on 23 Sept 2026, 09:21 UTC at a depth of 121 km.

Earthquakes of this size are classed as Moderate. Can damage poorly built structures close to the epicentre. This was an intermediate-depth earthquake, so shaking is spread over a wider, gentler area.

The nearest town in our records is Chilecito, about 47 km away in La Rioja, Argentina.